This standard specifies the technical requirements and measurement methods for digital film mid range projection systems. Any equivalent measurement method that can ensure the same measurement uncertainty can also be used. In case of dispute, this standard shall prevail. This standard applies to the development, production, use, maintenance, and testing of distribution master and distribution version production, projection equipment for digital film mid range projection systems. The following normative references are essential for the application of this document. For dated references, only the dated version applies to this document. For undated references, the latest version (including all modification orders) applies to this document. GB/T 9396-1996 Main Performance Test Methods for Speakers GB/T 17975.2-2000 Information Technology - General Coding of Moving Images and Associated Sound Information - Part 2: Technical Standards for Video
GY/T 183-2002 Digital Stereo Cinema GY/T 247-2011 Basic Functional and Interface Specifications for Cinema Management Systems GY/T 248-2011 Technical Requirements and Measurement Methods for Audio Power Amplifiers for Digital Cinema Mid range and Flow Projection Systems ISO 266-1997 Acoustics - Preferred Frequency Acoustics Preferred frequencies for measurements IS0 26430-4-2009 Digital Cinema Operations Log Records FormatSpecification CIE 1931 Color Space System CIE 1976 Color Space System
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBaijian and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China